摘要
在实验室条件下，研究了阳离子交换树脂－半透膜囊对水中游离态铜的吸附作用，比较了装填不同型号树脂的半透膜囊的吸附过程。研究结果表明，在常量阳离子含量较铜离子含量高三个数量级的条件下，所研究树脂都能选择性地吸附铜，其中Ｃｈｅｌｅｘ１００与ＡｍｂｅｒｌｉｔｅＩＲ－１２０树脂对铜的亲和性最强。吸附过程在数十天内呈线住，且远未饱和。藻类、细菌及各类杂质的存在对吸附过程有明显影响。
Application of dialysis membrane filled with cation exchange resins of various kinds onlong-term monitoring of free copper content in aquatic environment was examined. The se-lective accumulation of free copper by the membranes was demonstrated. Among all resinstested , Chelex-100 was found to have the strongest affinity to copper. The presence of im-purities from nature water inhibited the adsorption significantly by covering the surface ofthe membrane.
关键词
环境监测
铜
阳离子
交换树脂
free copper
resin dialysis membrane
monitoring
aquatic environment
adsorption.
